March 1: Latest on the invasion of Ukraine. President Biden to deliver State of the Union address tonight. Mardi Gras festivities return to New Orleans. New Pfizer study on kids ages five to 11.

<p>Breaking overnight: new Russian rocket attacks across Ukraine, and U.N. officials say more than 500,000 Ukrainians have left the country in recent days. Plus, President Biden is set to deliver his State of the Union address tonight. And, Mardi Gras is making its return — how the city is preparing for a safe celebration. Also, new research shows that Pfizer’s vaccine may be less effective for kids ages five to 11.</p>